Seguridad de la Información

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Vulnerabilidades explotadas activamente, incidentes y análisis relevantes para México y LATAM. Actualizado automáticamente desde fuentes oficiales.

48 vulnerabilidades en CISA KEV — explotación activa confirmada Ver todas →

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cwe-407 × Limpiar todo ×

M Alto vulnerabilidad

Vulnerabilidad de complejidad algorítmica en hMailServer permite denegación de servicio remota

Una deficiencia en el lector JSON de hMailServer permite a atacantes remotos no autenticados causar indisponibilidad de servicios de correo mediante objetos JSON malformados con miembros duplicados. El procesamiento O(N²) genera degradación severa: 1 MB consume 8.9 segundos y 4 MB alcanza 300 segundos. Afecta empresas y proveedores de correo en LATAM que implementen este servidor de mensajería.

M Alto vulnerabilidad

Vulnerabilidad alta en Progressive Robot hMailServer permite denegación de servicio remota

Una complejidad algorítmica ineficiente en la verificación de firmas DKIM y ARC en Progressive Robot hMailServer 6.0.0 a 6.3.5 permite a atacantes remotos no autenticados saturar servidores de correo mediante mensajes especialmente crafted. El procesamiento de encabezados crece exponencialmente, causando consumo excesivo de recursos y caída del servicio de correo, impactando directamente la comunicación empresarial en organizaciones que dependen de este servidor.

M Alto vulnerabilidad

Vulnerabilidad de complejidad algorítmica en Progressive Robot hMailServer 6.3.4 y 6.3.5

Una vulnerabilidad de complejidad algorítmica ineficiente en el procesamiento de rebotes y quejas de hMailServer permite a atacantes remotos no autenticados detener la entrega de correo mediante mensajes especialmente crafteados. El riesgo es alta cuando el procesamiento de notificaciones de estado de entrega (RFC 3464) o listas de correo están habilitadas en servidores de correo empresariales y de proveedores de servicios en LATAM.

M Alto vulnerabilidad

[CVE-2026-100700] nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text f…

nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.

M Alto vulnerabilidad

[CVE-2026-61814] Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work wh…

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This iss…

M Alto vulnerabilidad

[CVE-2026-87079] Net::IDN::Punycode versions before 2.590 for Perl allow CPU exhaustion via quadratic insertion cost …

Net::IDN::Punycode versions before 2.590 for Perl allow CPU exhaustion via quadratic insertion cost when decoding a long label in decode_punycode. The XS backend inserts each decoded code point into a UTF-8 buffer and finds the insertion point by scanning that buffer from the start, one character at a time. The scan runs once per code point over the output built so far, so the cost is quadratic i…

M Alto vulnerabilidad

[CVE-2026-87081] Net::IDN::UTS46 versions before 2.590 for Perl allow CPU exhaustion via quadratic punycode encoding …

Net::IDN::UTS46 versions before 2.590 for Perl allow CPU exhaustion via quadratic punycode encoding of an overlong label before the length check in to_ascii. to_ascii punycode encodes each label and only then applies the 63-byte DNS limit. encode_punycode in both backends follows the sample implementation in RFC 3492, whose outer loop runs once per distinct non-ASCII code point and scans the whol…

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M Alto vulnerabilidad

[CVE-2026-71418] Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security M…

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer. Multiple DATA frames with the EndOfStream flag set can grow the buffer to its 65 KiB limit while causing al…

M Alto vulnerabilidad

[CVE-2026-63446] Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security M…

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, AppLayerParserSetTransactionInspectId() in src/app-layer-parser.c uses an inverted guard and marks only already-inspected transactions as inspected. On flows passed by a pass rule or pass-the-flow exception policy, detection is skipped, so completed transact…

M Alto vulnerabilidad

[CVE-2026-63447] Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security M…

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity …

M Alto vulnerabilidad

[CVE-2026-69184] c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward…

c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource records whose NAME or RDATA fields refer to the chain, causing repeated decompression work that grows …

M Alto vulnerabilidad

[CVE-2026-92987] roxmltree through 0.21.1 performs quadratic-time attribute and namespace validation during XML parsi…

roxmltree through 0.21.1 performs quadratic-time attribute and namespace validation during XML parsing without limits on attribute count. Attackers can craft XML documents with tens of thousands of attributes on a single element to consume excessive CPU time and cause denial of service.

M Alto vulnerabilidad

Vulnerabilidad de denegación de servicio en Nodemailer 9.1.0 a 10.0.4 (CVE-2026-90776)

Nodemailer versiones 9.1.0 a 10.0.4 contienen una vulnerabilidad de complejidad cuadrática en el parser de direcciones que procesa comentarios RFC 5322. Atacantes pueden enviar encabezados de correo malformados para consumir CPU excesiva y bloquear el event loop de Node.js durante varios segundos, generando negación de servicio. Afecta especialmente a plataformas de notificaciones y sistemas de correo transaccional en LATAM que procesan volúmenes altos de mensajes.

M Alto vulnerabilidad

[CVE-2026-87822] t-digest versions 3.1 through 3.3 fail to validate centroid means during deserialization in MergingD…

t-digest versions 3.1 through 3.3 fail to validate centroid means during deserialization in MergingDigest.fromBytes, allowing attackers to inject NaN values that bypass validation checks. Attackers can craft malicious serialized digests containing NaN centroids that degrade sorting performance from O(n log n) to O(n squared), causing severe processing delays during merge operations.

M Alto vulnerabilidad

[CVE-2024-58382] league/commonmark versions before 2.6.0 contain polynomial time complexity vulnerabilities in Markdo…

league/commonmark versions before 2.6.0 contain polynomial time complexity vulnerabilities in Markdown parsing that allow attackers to cause denial of service. Attackers can submit carefully crafted Markdown inputs designed to trigger worst-case performance, and sending multiple requests in parallel exhausts CPU resources and PHP-FPM processes.

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M Alto vulnerabilidad

[CVE-2026-86435] commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Footnot…

commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Footnote extension that fails to deduplicate footnote definitions. Attackers can craft documents with duplicate footnote definitions and references to create quadratic output expansion, consuming excessive memory and CPU to exhaust server resources.

M Alto vulnerabilidad

[CVE-2026-86428] commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the Attrib…

commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the AttributesExtension when processing distinctly-named attributes. Attackers can submit Markdown with numerous distinct attribute names to cause quadratic-time attribute merging and filtering, consuming disproportionate CPU resources and preventing legitimate requests from completing.

M Alto vulnerabilidad

[CVE-2026-86429] The league/commonmark (thephpleague/commonmark) library in versions >= 1.5.0 and < 2.9.1 contains qu…

The league/commonmark (thephpleague/commonmark) library in versions >= 1.5.0 and < 2.9.1 contains quadratic parsing complexity in its SmartPunctExtension and AttributesExtension. When either extension is explicitly registered on the Environment (they are not enabled by default and are excluded from the standard CommonMark and GitHub-Flavored Markdown converters), an unauthenticated attacker can su…

M Alto vulnerabilidad

[CVE-2026-86430] league/commonmark versions before 2.9.1 contain multiple denial of service vulnerabilities in fenced…

league/commonmark versions before 2.9.1 contain multiple denial of service vulnerabilities in fenced code block detection, reference link label lookup, and emphasis delimiter processing that perform super-linear work on crafted input. Attackers can submit specially crafted Markdown with long backtick runs, nested brackets, or delimiter sequences to consume disproportionate CPU time and prevent leg…

M Alto vulnerabilidad

[CVE-2026-86433] commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Attribu…

commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Attributes extension where AttributesListener::findTargetAndDirection() performs quadratic-time sibling list scanning. Unauthenticated attackers can submit approximately 32 KB of repeated attribute blocks to cause parsing to take over 5 seconds, exhausting server resources.

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